物理化学学报 >> 1995, Vol. 11 >> Issue (08): 734-737.doi: 10.3866/PKU.WHXB19950813

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添加Tm对VPO催化剂性能的影响

李铭岫,宋天乐,杨述韬,王心葵,张志新,周敬来   

  1. 河北师范学院化学系|石家庄 050091；中国科学院山西煤炭化学研究所|太原 030001
  • 收稿日期:1994-07-12 修回日期:1994-11-28 发布日期:1995-08-15
  • 通讯作者:

Influence of Thulium Doped VPO Catalyst on Characterization of Catalyst

Li Ming-Xiu,Song Tian-Le,Yang Shu-Tao,Wang Xin-Kui,Zhang Zhi-Xin,Zhou Jing-Lai   

  1. Department of Chemistry,Hebei Teachers College,Shijiazhuang 050091;Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001
  • Received:1994-07-12 Revised:1994-11-28 Published:1995-08-15
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关键词: 铥, VPO催化剂, 顺酐, 正丁烷

Abstract:

Phase composition, surface characterization and catalytic performance of VPO and thulium doped VPO catalysts were investigated by means of NH3-TPD, XPS,XRD and IR. Experimental results showed that when Tm/V (atomic ratio) ＜0.10, both Bronsted and Lewis acidities on the surface of VPO catalysts with the addition of thulium were stronger than those of VPO catalyst, the doped catalyst accelerated the dehydrogenation step of the oxidation reaction of n-butane. Conversion of n-butane and selectivity to maleic anhydride were enhanced. While Tm/V≧0.10, the surface acidity of the catalysts was decreased and the activity of catalyst was dropped.

Key words: Thulium, VPO catalyst, n-Butane, Maleic anhydride